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我们必须每天打扫教室。
We must clean our classroom every day.
youdao
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我们必须每天打扫教室。
We have to clean our classroom every day.
youdao
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每天必须打扫教室。
Have to clean the classroom everyday.
youdao
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每天他们都必须打扫教室。
They must clean their classrooms every day.
youdao
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每天他们都必须打扫教室。
They must clean their classrooms every day.
youdao